JSP第二周作业

1.p39 实验2 显示当前时间，并输出上午(0-12)好,下午好(13-17),晚上好(18-23)

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    
  </head>
  
  <body>
    This is my JSP page. <br>
    <%
    Calendar c = Calendar.getInstance();                        //获取时间
    int hour = c.get(Calendar.HOUR);                        
    int minute = c.get(Calendar.MINUTE);
    int second = c.get(Calendar.SECOND);
    out.print("时间为"+hour+":"+minute+":"+second+"<br>");
    if(hour>=0 && hour<=12){                                    //判断时间
    out.print("上午好");
    }else if(hour>=13 && hour<=17){
    out.print("下午好");
    }else if(hour>=18 && hour<=23){
    out.print("晚上好");
    }
    %>
  </body>
</html>

 

  2. 使用声明方法,在页面调用该方法,判断2023是不是闰年

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!-- 声明方法 -->
<%!
    boolean leapyear(int year){
        if(year%4==0 && year%100!=0 || year%400==0){
            return true;
        }else{
            return false;
        }
    }
 %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
   
  </head>
  
  <body>
    This is my 判断闰年  page. <br>
    <!-- 调用方法判断 -->
    <% 
     if(leapyear(2023)){
       out.print("2023年是闰年");
     }else{
       out.print("2023年不是闰年");
     }
      %>
  </body>
</html>

 

 3.表达式+程序段 循环输出5条hr,长度分别为100px-500px

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    
  </head>
  
  <body>
    This is my JSP hr page. <br>
    <%--使用循环 输出--%>
    <%
      int i=0;
      for(i=1;i<6;i++){
     %>
    <hr width="<%=i*100%>px">
    <% 
      out.print("<dr>");
     %>
    <%
      } 
     %>
  </body>
</html>

 

posted @ 2022-03-14 21:37  15*  阅读(16)  评论(0)  编辑  收藏  举报